22258681 has 2 divisors, whose sum is σ = 22258682. Its totient is φ = 22258680.

The previous prime is 22258679. The next prime is 22258693. The reversal of 22258681 is 18685222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14745600 + 7513081 = 3840^2 + 2741^2 .

It is a cyclic number.

It is not a de Polignac number, because 22258681 - 2¹ = 22258679 is a prime.

It is a super-2 number, since 2×22258681² = 990897759719522, which contains 22 as substring.

Together with 22258679, it forms a pair of twin primes.

It is a nialpdrome in base 12.

It is not a weakly prime, because it can be changed into another prime (22258081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11129340 + 11129341.

It is an arithmetic number, because the mean of its divisors is an integer number (11129341).

Almost surely, 2^22258681 is an apocalyptic number.

It is an amenable number.

22258681 is a deficient number, since it is larger than the sum of its proper divisors (1).

22258681 is an equidigital number, since it uses as much as digits as its factorization.

22258681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15360, while the sum is 34.

The square root of 22258681 is about 4717.9106604513. The cubic root of 22258681 is about 281.2978903799.

The spelling of 22258681 in words is "twenty-two million, two hundred fifty-eight thousand, six hundred eighty-one".